Once Human Update Guide: Isles of Abyss, Halloween Events, New Weapons & Patch Notes

Overview

The next Once Human update brings a massive wave of content: the Isles of Abyss scenario, Halloween events, a new weapon and matching armor, first-person over-the-shoulder aiming, and dozens of quality-of-life improvements. This guide covers everything you need to know to prepare, including how to make the most of your Once Human Energy Link as you dive into the new scenario.

Maintenance: Starts October 21st at 4:00 Pacific time, expected to finish around 7:00.

1. Isles of Abyss Scenario

1.1 Server & Launch Details

Sign-ups open after maintenance—there is no advance registration.

Server distribution at launch:

Europe: 4 scenario servers

North America: 4 scenario servers

Other regions: 2 scenario servers

1.2 Story & Setting

Mala and Ran guide you through a story about lost memories and the Sunken Lord.

Reaching full purification unlocks the Sunken Lord.

You'll explore four distinct environments:

Tropical islands

Frozen regions

Underwater ruins

Haywire zones

Haywire zones feature Mists of Deceit, Blacktide, Time Rain, and Skyfire—each requiring different protection.

1.3 Bay Crocodiles

You can capture, breed, and ride bay crocodiles. While mounted, you gain:

Damage reduction

A backlash effect

1.4 Resources

Tide elves and marine creatures provide additional resources.

1.5 Ships: Mobile Territories

Ships serve as mobile territories you can:

Build

Summon

Relocate

Share

Combat options expand with:

Different cannons

Rams

Naval mines

1.6 Environmental Survival Gear

1.7 Production Facilities

Fishing nets

Fish cages

Oil wells

Automated mining

Blacktide fuel

1.8 Survival Facilities

Repair facilities

Territory protection

Revive stations

1.9 Exploration & Activities

Explore beaches, shipwrecks, and underwater laboratories for treasure

Go deep-sea fishing

Fight and board enemy voyagers

1.10 Calamity Encounters

1.11 Phase Two Additions

Stronger Voyager fleets

Sea calamity zones

Drifting greenhouses

1.12 Progression System

Important: Your character starts at maximum level, but technology progress determines:

Gear rarity

Unlocked facilities

Active mod attributes

Carryover: Existing blueprints and mods carry over.

Disabled: The cradle system is disabled.

Heart of the Ocean: Earned through exploration and challenges, then spent to claim rewards.

1.13 New Enemies

1.14 Deviations

The Duet Deviation drops from the Sunken Lord and changes territory weather, affecting players and facilities.

Eight morphed deviations are coming with new appearances for:

Shattered Maiden

Director Fox

Gingerbread House

Whale Pup

Space Turner

Snow Globe

H-27

Rebecca

All support deviation fusion.

1.15 New Armor Mods

1.16 Scenario Rewards

Furniture

Avatar frames

Launch gifts: Legendary blueprints and a free weapon skin

1.17 Raid Zone

The Raid Zone gets its own ocean map with:

No world divisions

Scarcer supplies

Warning: Ships can sink, and anything stored aboard is lost.

Design saving: Saving a design at an anchor increases maximum ship health and lets you restore that design after sinking. Without one, only the starting ship can be summoned.

1.18 Separate Zone Servers

Console-exclusive options available

2-week reopening cycle

2. New Weapon: Cosmic Visitor Assault Rifle

2.1 Mechanics

On hit: Can generate a frost vortex

First hit after reloading: Guaranteed to trigger a vortex

After enough hits: Launches a homing ice spear that explodes on impact

Generating a vortex: Also fires ice spears at visible enemies

Kills: Can trigger more spears after a short cooldown

Note: These spears count as ice constructs.

2.2 Matching Armor: Snowline Elite Vest

Frost vortex effects activate one extra time without generating another vortex

Every vortex increases vortex damage, stacking up to 5 times for 5 seconds

2.3 Availability

Both blueprints are free through your mailbox until November 8th.

3. First-Person Over-the-Shoulder Aiming

Provides a wider view than aiming down sights

Greater bullet spread as a trade-off

Controls match the third-person version

Aim settings have been reorganized

4. Halloween Events

4.1 Wonder Night

Dates: October 22nd – November 11th

How to participate:

Complete tasks for blind box attempts

Collect candy

Earn regular or hidden prizes

Rewards include:

Stardust crates

Furniture

Shiny mods

Halloween cosmetics

Candy bait attracts visitors to your territory or a hive member's territory, offering chances at star chrome and rare rewards.

Special seeds grow wearable pumpkin headgear, but:

Harvested pumpkins expire after 3 days

Unused seeds disappear November 18th

Daily check-ins offer light forge ingots, dyes, and furniture.

4.2 Ocean Cleanup Event

Rewards collecting old iron buckets in Isles of Abyss.

4.3 Mysterious Morphed Deviation

Until December 30th, a mysterious morphed deviation can be discovered through:

Fishing

A hostile wilderness encounter

5. Shop Updates

5.1 First Purchase Bonus Reset

The shop resets double Chriskin bonuses for every recharge tier.

5.2 New Items

5.3 Returning Battle Passes

Battle passes from seasons 2, 3, and 5 return through premium packs and silver key draws.

5.4 Other Arrivals

Bay Cruise Ship materials

Abyssal Wonderland furniture

Salty Breeze fashion

Dyes

Umbral Weaver combo trait

5.5 Halloween Shop Releases (Starting October 28th)

Exhibition furniture

Neon skeleton fashion

Bundles

Coupons

Returning cosmetics, including Noir legacy weapon skins

6. Gameplay & Quality-of-Life Improvements

6.1 Movement & Combat

First-person movement loses less speed while strafing or moving backward

Weapon swapping and aiming animations are smoother

Machine guns obstruct less of the screen while running

Water gathering has been adjusted

6.2 Controls & UI

Controllers receive sensitivity presets and better-organized menus

Radiance nickname colors now appear in team interfaces and dungeon results

Starting a scenario combines class and respawn point selection

Console shop menus improved

Dismount button can be customized

Consoles gain custom keyboard and mouse bindings

Simpler raid zone storage controls

6.3 Accessibility & Clarity

Acting Physician's core is easier to hit

Players below level 40 can self-repair only once

Mod crate descriptions and selection menus are clearer

6.4 Mod System

Equipped mods switch automatically when you change weapons

Legendary mod crates go directly into your backpack instead of dropping on the ground (cannot be accidentally left behind)

6.5 Calibration & Environment

Calibration blueprints gain better filters

Stairs receive collision improvements

6.6 Vehicles

Photo mode and space-time while driving

Improved animations

New radio content

Simultaneous jukebox and Walkman use

6.7 Custom Servers

Better host tools

Announcements

Welcome messages

Item pricing

Editable settings

6.8 Social & Shared Features

Cross-server interactions display clearer reminders

Shared blueprints show more information

Robot fish gets new animations

6.9 First-Person Death Replay

Available with improved accuracy.

6.10 Recycling

Automatically equips the tool

Computer shortcut changed to H

Controller shortcuts updated

6.11 Anti-Cheat

Improved detection to reduce false positives.

6.12 Visual Updates

Some strongholds receive visual updates.

7. Bug Fixes

The update addresses:

Returning light forge rewards

Persistent extreme weather

Rare animal appearances

Pollution zone respawns

Director Fox cub bonuses

Doberman interactions

Vehicle prompts

Territory construction and loading

Emergency first aid calendar

Rescue bots failing to recover lost items

8. Quick Preparation Checklist

Note the maintenance window: October 21st, 4:00–7:00 PT

Sign up for Isles of Abyss after maintenance—no advance registration

Claim your free Cosmic Visitor Assault Rifle and Snowline Elite Vest from your mailbox before November 8th

Participate in Wonder Night (October 22nd–November 11th) for cosmetics and rewards

Use special seeds before November 18th—they disappear

Save ship designs at anchors to restore them after sinking

Check daily during Wonder Night for check-in rewards

Watch for the Halloween shop refresh on October 28th

Prepare for the permanent server expected November 18th

Final Thoughts

This update is packed with content: a full new scenario with naval combat and underwater exploration, a powerful new assault rifle with matching armor, Halloween festivities, and extensive quality-of-life improvements. Whether you're diving into the Isles of Abyss, hunting for the mysterious morphed deviation, or simply enjoying smoother controls, there's something for every Once Human player—and if you want to Buy Once Human Energy Link, I recommend MMOEXP.